Ответ:
1.) Clean - Cleaner - The Cleanest
2.) Big - Bigger - The Biggest
3.) Hot - Hotter - The Hottest
4.) Interesting - More Interesting - The Most Interesting
5.) Good - Better - Best
6.) Easy - Easier - The Easiest
7.) Warm - Warmer - The Warmest
8.) Bad - Worse - The Worst